Fox babies are commonly called kits or cubs. These terms are used interchangeably and refer to the young offspring of foxes.

The term “kit” is most commonly associated with red foxes, which are the most widely distributed species of foxes and the ones most frequently encountered by humans. Red fox kits are born in the spring, after a gestation period of approximately 51 days. The average litter size is four or five kits, although litters of up to 13 kits have been reported.
Red fox kits are born deaf, blind, and helpless, weighing only about three ounces. They are entirely dependent on their mother for warmth, protection, and nourishment, which they receive through nursing. As the kits grow, they will start to explore the world around them, play with their siblings, and learn important survival skills such as hunting and avoiding predators.
Gray foxes, which are native to North and Central America, also have offspring that are called kits. Gray fox kits are born slightly earlier in the year than red fox kits, with an average gestation period of 53 days. Gray fox litters are typically smaller than those of red foxes, with an average size of two to four kits.
Gray fox kits are born with their eyes open and are able to move around on their own within a few weeks of birth. However, they are still dependent on their mother for nourishment and protection during this time.
Arctic foxes, which are native to the Arctic regions of North America and Eurasia, also have offspring that are called kits. Arctic fox kits are born in the spring, after a gestation period of approximately 52 days. The average litter size is six kits.
Arctic fox kits are born with dark fur, which helps them blend in with the surrounding environment. They are born blind and helpless, and rely on their mother for warmth, protection, and nourishment. As the kits grow, they will start to venture out of the den and learn important survival skills such as hunting and avoiding predators.
In summary, fox babies are commonly called kits or cubs. Different species of foxes have different reproductive patterns, but all fox kits are born helpless and rely on their mother for warmth, protection, and nourishment. As the kits grow, they will start to explore the world around them, play with their siblings, and learn important survival skills.